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Why are the depressions and scars so clearly seen on the moon even though they are millions of years old?
The moon's surface has not undergone the same level of weathering and erosion as Earth's surface, allowing its features to remain relatively unchanged for millions of years. The lack of atmosphere, water, or tectonic activity on the moon has preserved these depressions and scars. Additionally, impacts from asteroids and meteoroids have continued to shape the lunar surface over time.
What will happen to a 3KG (7lb) rock spaced on a hill for 100 years?
Over 100 years, a 3 kg rock on a hill will likely remain in place unless affected by external forces. Weathering processes, such as rain, wind, and temperature changes, may gradually erode its surface and the surrounding soil. Additionally, vegetation growth could potentially stabilize or shift the rock. However, without significant geological events, the rock is expected to remain relatively unchanged in its position.
Why craters on the moon last millions of years?
Craters on the moon last for millions of years because there is no atmosphere to weather or erode them. Without wind or water erosion, the impact features on the moon remain relatively unchanged for long periods of time. Additionally, the lack of tectonic activity means the surface of the moon is not constantly being reshaped.
How does the Moon's lack of atmosphere affect its surface?
The Moon's lack of atmosphere leads to extreme temperature fluctuations, with daytime temperatures soaring to around 127°C (260°F) and plummeting to -173°C (-280°F) at night. This absence of protective atmospheric layers means that the lunar surface is directly exposed to solar radiation, cosmic rays, and micrometeorite impacts, resulting in a rugged, pockmarked terrain. The lack of wind and weather also means that features like craters and dust remain largely unchanged over time, preserving the Moon's geological history.
Why do craters last for millions of years on the moon?
Craters last for millions of years on the Moon because there is no atmosphere to erode them. On Earth, weathering processes like wind and water can slowly wear away craters, but on the Moon, the lack of atmosphere means that craters remain relatively unchanged for long periods of time. Additionally, the Moon's surface experiences very slow geological processes, further preserving these features.
Which property of a rock remains unchanged by mechanical wheathering?
The mineral composition of a rock remains unchanged by mechanical weathering. Mechanical weathering physically breaks down rocks into smaller pieces without altering their chemical structure or the minerals present. This process may change the size, shape, or surface area of the rock, but the minerals themselves remain intact.
What property of rock remains unchanged by mechanical weathering?
Technically, they do remain unchanged. But as physical weathering of rocks progresses, it can expose the minerals in the cracks to the elements resulting in the disintegration of the rock. The mineral makeup of the rock will then change to agree with the surrounding environment.
Would Earth's surface be different without weathering and erosion?
Yes, without weathering and erosion, Earth's surface would look significantly different. These processes help shape our landscapes by breaking down rocks and transporting sediments, creating features like mountains, valleys, and coastlines. Without them, much of Earth's surface would remain unchanged over time.
How the rates of mechanical and chemical weathering might differ in the Congolese rain forest and the Siberian steppes?
The rates of mechanical weathering does not affect anything since the chemical properties remain unchanged. Only chemical weathering affects the chemical properties of an object.
What has to be true for the successful development of a vaccine to be used against a pathogen?
It is necessary that the surface antigens of the pathogen remain unchanged
When a gas or liquid is heated then its mass is?
The mass remain unchanged.
When sound wave refracted from air to water what will remain unchanged?
The frequency of the sound wave will remain unchanged when it refracts from air to water.
What did Uluru look like in 1901?
In 1901, Uluru looked virtually identical to how it looks now. The main difference is that it did not have the well-trodden path it now has to the top. Its shape, size and colour remain unchanged.
What was the discrimination like during the Cold War?
Since the cold war was a priority, all other aspects of life remain virtually unchanged. Today's current lifestyle(s) commenced after the cold war in 1990.
How many unchanges atoms would remain after 3 half lives if the initial sample had 600 unchanged atoms?
After 3 half-lives, half of the original sample would remain unchanged. After the 1st half-life: 300 unchanged atoms. After the 2nd half-life: 150 unchanged atoms. After the 3rd half-life: 75 unchanged atoms would remain.
What will happen if there is no weathering of rocks?
If there is no weathering of rocks, they will remain unchanged and may not break down into smaller pieces. This can lead to a lack of soil formation and nutrient cycling, impacting plant growth and overall ecosystem health. Additionally, the lack of weathering can hinder the formation of new landforms over time.
Why are the depressions and scars so clearly seen on the moon even though they are millions of years old?
The moon's surface has not undergone the same level of weathering and erosion as Earth's surface, allowing its features to remain relatively unchanged for millions of years. The lack of atmosphere, water, or tectonic activity on the moon has preserved these depressions and scars. Additionally, impacts from asteroids and meteoroids have continued to shape the lunar surface over time.
